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757 MAINTENANCE MANUAL
S 216-014
(4)
If the visual check shows that the fuel pump is not OK, do these steps:
(a)
Replace the applicable fuel pump (AMM 28-22-03/401).
(b)
Do the Continuity/Resistance Check on the replacement fuel pump. 1) Start with this procedure: Fuel Pump Continuity Check.
S 216-042
(5)
If the visual inspection shows that the fuel pump is satisfactory, do this procedure: Fuel Pump Continuity Check.
H.
Fuel Pump Continuity Check
S 016-015
(1) Disconnect the electrical connector from the fuel pump.
S 766-054
WARNING: MAKE SURE THE METER USED TO MEASURE BONDING JUMPER CONTINUITY
_______ IS RESISTANT TO EXPLOSION. IF NOT, IT IS POSSIBLE THAT AN EXPLOSION OR FIRE CAN OCCUR.
(2) Use the AVTRON Model T477W bonding meter or an equivalent ohmmeter ú (SWPM 20-20-00).
S 766-038
(3) Measure the resistance between pin 4 of the electrical connector on the pump and the braided bonding jumper on the fuel pump (Fig. 601, Sheet 2).
NOTE: The measurement between pin 4 and the bonding jumper is a
____ continuity check, not a bonding resistance check.
S 976-045
(4)
Record the resistance measured between pin 4 and the braided bonding jumper on the 757 Fuel Pump Inspection Data Sheet (Fig. 602, Sheet 1).
S 766-039
(5)
If the resistance is more than 10 ohms, do these steps:
(a)
Replace the applicable fuel pump (AMM 28-22-03/401).
(b)
Do the Fuel Pump Continuity Check on the replacement fuel pump.
S 766-040
(6) If the resistance is less than or equal to 10 ohms, continue procedure: Initial Insulation Resistance Check.
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28-22-00 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 3(12)
